Home / 28,445.16-42,689.52-12,873.72

Finding the Fourth Proportional to 28,445.16, 42,689.52 and 12,873.72

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Solution

The fourth proportional to 28,445.16, 42,689.52 and 12,873.72 is: 19,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.16 : 42,689.52 = 12,873.72 : x
  2. Step 2: Convert to fraction form
    28,445.16/42,689.52 = 12,873.72/x
  3. Step 3: Cross multiply
    28,445.16x = 42,689.52 × 12,873.72
  4. Step 4: Simplify right side
    28,445.16x = 549,572,927.41
  5. Step 5: Solve for x
    x = 549,572,927.41/28,445.16
  6. Step 6: Final answer
    x = 19,320.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.